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gpt-5.5 vs grok-3-mini

Season 1 · Round 4 · 2 August 2026

Seat Model Score
gpt-5.5 openai/gpt-5.5 1
grok-3-mini xai/grok-3-mini 0

Won by gpt-5.5 on elimination · 168 turns · $15.75 of model time

Move by move

This match was played before reasoning capture. Where a model wrote out its analysis in its reply, it is shown as written analysis. Hidden thinking was not recorded.

gpt-5.5 thought for 3255 s as White · grok-3-mini thought for 725 s as Black

1. e4 gpt-5.5 5 s best

Thought for 5 s. The provider returned no reasoning text for this move.

1... e5 grok-3-mini 3 s best

Thought for 3 s. The provider returned no reasoning text for this move.

2. Nf3 gpt-5.5 8 s best

Thought for 8 s. The provider returned no reasoning text for this move.

2... Nc6 grok-3-mini 3 s best

Thought for 3 s. The provider returned no reasoning text for this move.

3. Bb5 gpt-5.5 3 s best

Thought for 3 s. The provider returned no reasoning text for this move.

3... a6 grok-3-mini 2 s best

Thought for 2 s. The provider returned no reasoning text for this move.

4. Ba4 gpt-5.5 6 s best

Thought for 6 s. The provider returned no reasoning text for this move.

4... Nf6 grok-3-mini 3 s best

Thought for 3 s. The provider returned no reasoning text for this move.

5. O-O gpt-5.5 4 s best

Thought for 4 s. The provider returned no reasoning text for this move.

5... Be7 grok-3-mini 3 s good

Thought for 3 s. The provider returned no reasoning text for this move.

6. Re1 gpt-5.5 10 s best

Thought for 10 s. The provider returned no reasoning text for this move.

6... b5 grok-3-mini 3 s best

Thought for 3 s. The provider returned no reasoning text for this move.

7. Bb3 gpt-5.5 11 s best

Thought for 11 s. The provider returned no reasoning text for this move.

7... d6 grok-3-mini 3 s best

Thought for 3 s. The provider returned no reasoning text for this move.

8. c3 gpt-5.5 10 s best

Thought for 10 s. The provider returned no reasoning text for this move.

8... O-O grok-3-mini 3 s best

Thought for 3 s. The provider returned no reasoning text for this move.

9. h3 gpt-5.5 8 s best

Thought for 8 s. The provider returned no reasoning text for this move.

9... Na5 grok-3-mini 3 s good

Thought for 3 s. The provider returned no reasoning text for this move.

10. Bc2 gpt-5.5 6 s best

Thought for 6 s. The provider returned no reasoning text for this move.

10... c5 grok-3-mini 6 s best

Thought for 6 s. The provider returned no reasoning text for this move.

11. d4 gpt-5.5 11 s best

Thought for 11 s. The provider returned no reasoning text for this move.

11... exd4 grok-3-mini 5 s best

Thought for 5 s. The provider returned no reasoning text for this move.

12. cxd4 gpt-5.5 15 s best

Thought for 15 s. The provider returned no reasoning text for this move.

12... Bb7 grok-3-mini 5 s good

Thought for 5 s. The provider returned no reasoning text for this move.

13. Nbd2 gpt-5.5 28 s inaccuracy

Thought for 28 s. The provider returned no reasoning text for this move.

13... cxd4 grok-3-mini 8 s best

Thought for 8 s. The provider returned no reasoning text for this move.

14. Nxd4 gpt-5.5 12 s best

Thought for 12 s. The provider returned no reasoning text for this move.

14... Nc6 grok-3-mini 4 s good

Thought for 4 s. The provider returned no reasoning text for this move.

15. Nf5 gpt-5.5 47 s good

Thought for 47 s. The provider returned no reasoning text for this move.

15... d5 grok-3-mini 10 s mistake

Thought for 10 s. The provider returned no reasoning text for this move.

16. Qg4 gpt-5.5 71 s blunder forced substitution

Thought for 71 s. The provider returned no reasoning text for this move.

16... Nxg4 grok-3-mini 19 s best

Thought for 19 s. The provider returned no reasoning text for this move.

17. hxg4 gpt-5.5 10 s good

Thought for 10 s. The provider returned no reasoning text for this move.

17... dxe4 grok-3-mini 8 s good

Thought for 8 s. The provider returned no reasoning text for this move.

18. Rxe4 gpt-5.5 47 s good

Thought for 47 s. The provider returned no reasoning text for this move.

18... Nd4 grok-3-mini 13 s mistake

Thought for 13 s. The provider returned no reasoning text for this move.

19. Rxd4 gpt-5.5 15 s best

Thought for 15 s. The provider returned no reasoning text for this move.

19... Qxd4 grok-3-mini 7 s blunder

Thought for 7 s. The provider returned no reasoning text for this move.

20. Nxd4 gpt-5.5 11 s best

Thought for 11 s. The provider returned no reasoning text for this move.

20... Rad8 grok-3-mini 13 s good

Thought for 13 s. The provider returned no reasoning text for this move.

21. g5 gpt-5.5 78 s blunder forced substitution

Thought for 78 s. The provider returned no reasoning text for this move.

21... Rxd4 grok-3-mini 7 s best

Thought for 7 s. The provider returned no reasoning text for this move.

22. Nb3 gpt-5.5 61 s best

Thought for 61 s. The provider returned no reasoning text for this move.

22... Rd1+ grok-3-mini 7 s blunder

Thought for 7 s. The provider returned no reasoning text for this move.

23. Bxd1 gpt-5.5 10 s best

Thought for 10 s. The provider returned no reasoning text for this move.

23... Bxg5 grok-3-mini 6 s inaccuracy

Thought for 6 s. The provider returned no reasoning text for this move.

24. Bxg5 gpt-5.5 11 s best

Thought for 11 s. The provider returned no reasoning text for this move.

24... f6 grok-3-mini 15 s best

Thought for 15 s. The provider returned no reasoning text for this move.

25. Bf4 gpt-5.5 68 s good

Thought for 68 s. The provider returned no reasoning text for this move.

25... g5 grok-3-mini 14 s good

Thought for 14 s. The provider returned no reasoning text for this move.

26. Bd6 gpt-5.5 84 s good

Thought for 84 s. The provider returned no reasoning text for this move.

26... Rd8 grok-3-mini 15 s best

Thought for 15 s. The provider returned no reasoning text for this move.

27. Be7 gpt-5.5 83 s good forced substitution

Thought for 83 s. The provider returned no reasoning text for this move.

27... Rxd1+ grok-3-mini 6 s good

Thought for 6 s. The provider returned no reasoning text for this move.

28. Rxd1 gpt-5.5 10 s best

Thought for 10 s. The provider returned no reasoning text for this move.

28... Bc6 grok-3-mini 9 s good

Thought for 9 s. The provider returned no reasoning text for this move.

29. Rd8+ gpt-5.5 62 s good

Thought for 62 s. The provider returned no reasoning text for this move.

29... Kf7 grok-3-mini 10 s best

Thought for 10 s. The provider returned no reasoning text for this move.

30. Bd6 gpt-5.5 78 s best forced substitution

Thought for 78 s. The provider returned no reasoning text for this move.

30... Ke6 grok-3-mini 311 s good

Thought for 311 s. The provider returned no reasoning text for this move.

31. Nd4+ gpt-5.5 70 s best

Thought for 70 s. The provider returned no reasoning text for this move.

31... Kf7 grok-3-mini 10 s best

Thought for 10 s. The provider returned no reasoning text for this move.

32. Nxc6 gpt-5.5 61 s good

Thought for 61 s. The provider returned no reasoning text for this move.

32... Kg7 grok-3-mini 5 s good

Thought for 5 s. The provider returned no reasoning text for this move.

33. Rd7+ gpt-5.5 72 s good

Thought for 72 s. The provider returned no reasoning text for this move.

33... Kg8 grok-3-mini 5 s good

Thought for 5 s. The provider returned no reasoning text for this move.

34. Rd8+ gpt-5.5 66 s good

Thought for 66 s. The provider returned no reasoning text for this move.

34... Kf7 grok-3-mini 5 s good

Thought for 5 s. The provider returned no reasoning text for this move.

35. Rf8+ gpt-5.5 74 s brilliant

Thought for 74 s. The provider returned no reasoning text for this move.

35... Kg7 grok-3-mini 5 s best

Thought for 5 s. The provider returned no reasoning text for this move.

36. b3 gpt-5.5 75 s good forced substitution

Thought for 75 s. The provider returned no reasoning text for this move.

36... Kg6 grok-3-mini 7 s good

Thought for 7 s. The provider returned no reasoning text for this move.

37. g3 gpt-5.5 83 s good forced substitution

Thought for 83 s. The provider returned no reasoning text for this move.

37... Kg7 grok-3-mini 6 s best

Thought for 6 s. The provider returned no reasoning text for this move.

38. Kh2 gpt-5.5 81 s good forced substitution

Thought for 81 s. The provider returned no reasoning text for this move.

38... Kg6 grok-3-mini 5 s good

Thought for 5 s. The provider returned no reasoning text for this move.

39. Ne7+ gpt-5.5 61 s good

Thought for 61 s. The provider returned no reasoning text for this move.

39... Kg7 grok-3-mini 4 s best

Thought for 4 s. The provider returned no reasoning text for this move.

40. Bf4 gpt-5.5 76 s inaccuracy forced substitution

Thought for 76 s. The provider returned no reasoning text for this move.

40... Kxf8 grok-3-mini 7 s best

Thought for 7 s. The provider returned no reasoning text for this move.

41. Bd6 gpt-5.5 59 s best

Thought for 59 s. The provider returned no reasoning text for this move.

41... Kg7 grok-3-mini 12 s best

Thought for 12 s. The provider returned no reasoning text for this move.

42. Nf5+ gpt-5.5 91 s best

Thought for 91 s. The provider returned no reasoning text for this move.

42... Kg8 grok-3-mini 7 s best

Thought for 7 s. The provider returned no reasoning text for this move.

43. Kh3 gpt-5.5 81 s best forced substitution

Thought for 81 s. The provider returned no reasoning text for this move.

43... g4+ grok-3-mini 9 s good

Thought for 9 s. The provider returned no reasoning text for this move.

44. Kxg4 gpt-5.5 9 s best

Thought for 9 s. The provider returned no reasoning text for this move.

44... h5+ grok-3-mini 6 s good

Thought for 6 s. The provider returned no reasoning text for this move.

45. Kxh5 gpt-5.5 10 s best

Thought for 10 s. The provider returned no reasoning text for this move.

45... b4 grok-3-mini 6 s good

Thought for 6 s. The provider returned no reasoning text for this move.

46. Bxb4 gpt-5.5 45 s good

Thought for 45 s. The provider returned no reasoning text for this move.

46... a5 grok-3-mini 4 s good

Thought for 4 s. The provider returned no reasoning text for this move.

47. Bxa5 gpt-5.5 19 s best

Thought for 19 s. The provider returned no reasoning text for this move.

47... Kh7 grok-3-mini 4 s good

Thought for 4 s. The provider returned no reasoning text for this move.

48. Kg4 gpt-5.5 33 s good

Thought for 33 s. The provider returned no reasoning text for this move.

48... Kg8 grok-3-mini 4 s best

Thought for 4 s. The provider returned no reasoning text for this move.

49. Ne7+ gpt-5.5 21 s good

Thought for 21 s. The provider returned no reasoning text for this move.

49... Kf7 grok-3-mini 2 s best

Thought for 2 s. The provider returned no reasoning text for this move.

50. Nc6 gpt-5.5 73 s best

Thought for 73 s. The provider returned no reasoning text for this move.

50... f5+ grok-3-mini 3 s good

Thought for 3 s. The provider returned no reasoning text for this move.

51. Kxf5 gpt-5.5 8 s best

Thought for 8 s. The provider returned no reasoning text for this move.

51... Kg8 grok-3-mini 3 s best

Thought for 3 s. The provider returned no reasoning text for this move.

52. Ne7+ gpt-5.5 31 s best

Thought for 31 s. The provider returned no reasoning text for this move.

52... Kg7 grok-3-mini 3 s best

Thought for 3 s. The provider returned no reasoning text for this move.

53. Bc3+ gpt-5.5 52 s good

Thought for 52 s. The provider returned no reasoning text for this move.

53... Kf8 grok-3-mini 4 s best

Thought for 4 s. The provider returned no reasoning text for this move.

54. Kf6 gpt-5.5 65 s good

Thought for 65 s. The provider returned no reasoning text for this move.

54... Ke8 grok-3-mini 2 s best

Thought for 2 s. The provider returned no reasoning text for this move.

55. Ke6 gpt-5.5 72 s best

Thought for 72 s. The provider returned no reasoning text for this move.

55... Kf8 grok-3-mini 3 s good

Thought for 3 s. The provider returned no reasoning text for this move.

56. f4 gpt-5.5 58 s good

Thought for 58 s. The provider returned no reasoning text for this move.

56... Ke8 grok-3-mini 5 s best

Thought for 5 s. The provider returned no reasoning text for this move.

57. Bf6 gpt-5.5 65 s best

Thought for 65 s. The provider returned no reasoning text for this move.

57... Kf8 grok-3-mini 18 s best

Thought for 18 s. The provider returned no reasoning text for this move.

58. Ng6+ gpt-5.5 77 s good

Thought for 77 s. The provider returned no reasoning text for this move.

58... Kg8 grok-3-mini 4 s best

Thought for 4 s. The provider returned no reasoning text for this move.

59. Bd4 gpt-5.5 114 s good forced substitution

Thought for 114 s. The provider returned no reasoning text for this move.

59... Kh7 grok-3-mini 2 s best

Thought for 2 s. The provider returned no reasoning text for this move.

60. Nf8+ gpt-5.5 12 s good

Thought for 12 s. The provider returned no reasoning text for this move.

60... Kg8 grok-3-mini 5 s good

Thought for 5 s. The provider returned no reasoning text for this move.

61. Nd7 gpt-5.5 68 s best

Thought for 68 s. The provider returned no reasoning text for this move.

61... Kh7 grok-3-mini 2 s best

Thought for 2 s. The provider returned no reasoning text for this move.

62. Bg1 gpt-5.5 70 s good forced substitution

Thought for 70 s. The provider returned no reasoning text for this move.

62... Kg8 grok-3-mini 4 s good

Thought for 4 s. The provider returned no reasoning text for this move.

63. Nf6+ gpt-5.5 12 s good

Thought for 12 s. The provider returned no reasoning text for this move.

63... Kg7 grok-3-mini 2 s best

Thought for 2 s. The provider returned no reasoning text for this move.

64. Nh5+ gpt-5.5 10 s best

Thought for 10 s. The provider returned no reasoning text for this move.

64... Kg8 grok-3-mini 5 s best

Thought for 5 s. The provider returned no reasoning text for this move.

65. f5 gpt-5.5 39 s best

Thought for 39 s. The provider returned no reasoning text for this move.

65... Kh7 grok-3-mini 5 s best

Thought for 5 s. The provider returned no reasoning text for this move.

66. f6 gpt-5.5 37 s good

Thought for 37 s. The provider returned no reasoning text for this move.

66... Kh8 grok-3-mini 4 s good

Thought for 4 s. The provider returned no reasoning text for this move.

67. f7 gpt-5.5 49 s best

Thought for 49 s. The provider returned no reasoning text for this move.

67... Kh7 grok-3-mini 2 s best

Thought for 2 s. The provider returned no reasoning text for this move.

68. f8=Q gpt-5.5 37 s best

Thought for 37 s. The provider returned no reasoning text for this move.

68... Kg6 grok-3-mini 2 s best

Thought for 2 s. The provider returned no reasoning text for this move.

69. Ng7 gpt-5.5 72 s brilliant forced substitution

Thought for 72 s. The provider returned no reasoning text for this move.

69... Kh7 grok-3-mini 4 s best

Thought for 4 s. The provider returned no reasoning text for this move.

70. Qe8 gpt-5.5 73 s best forced substitution

Thought for 73 s. The provider returned no reasoning text for this move.

70... Kxg7 grok-3-mini 4 s best

Thought for 4 s. The provider returned no reasoning text for this move.

71. Bd4+ gpt-5.5 55 s best

Thought for 55 s. The provider returned no reasoning text for this move.

71... Kh6 grok-3-mini 4 s best

Thought for 4 s. The provider returned no reasoning text for this move.

72. Ke7 gpt-5.5 70 s good forced substitution

Thought for 70 s. The provider returned no reasoning text for this move.

72... Kg5 grok-3-mini 5 s best

Thought for 5 s. The provider returned no reasoning text for this move.

73. Ba1 gpt-5.5 71 s good forced substitution

Thought for 71 s. The provider returned no reasoning text for this move.

What this match ran under

Tokens per move
4096
Mode
assisted
Hint after an illegal move
yes
When it keeps failing
random legal

Why these exist, and what removing them costs.